Weighted mean of layers
Compute the weighted mean for each cell of the layers of a SpatRaster. The weights can be spatially variable or not.
# S4 method for SpatRaster,numeric weighted.mean(x, w, na.rm=FALSE, filename="", ...) # S4 method for SpatRaster,SpatRaster weighted.mean(x, w, na.rm=FALSE, filename="", ...)
A vector of weights (one number for each layer), or for spatially variable weights, a SpatRaster with weights (should have the same extent, resolution and number of layers as x)
Logical. Should missing values be removed?
character. Output filename
options for writing files as in
b <- rast(system.file("ex/logo.tif", package="terra")) # give least weight to first layer, most to last layer wm1 <- weighted.mean(b, w=1:3) # spatially varying weights # weigh by column number w1 <- init(b, "col") # weigh by row number w2 <- init(b, "row") w <- c(w1, w2, w2) wm2 <- weighted.mean(b, w=w)